Home / 21,869.37-30,182.49-12,436.11

Finding the Fourth Proportional to 21,869.37, 30,182.49 and 12,436.11

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Solution

The fourth proportional to 21,869.37, 30,182.49 and 12,436.11 is: 17,163.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,869.37 : 30,182.49 = 12,436.11 : x
  2. Step 2: Convert to fraction form
    21,869.37/30,182.49 = 12,436.11/x
  3. Step 3: Cross multiply
    21,869.37x = 30,182.49 × 12,436.11
  4. Step 4: Simplify right side
    21,869.37x = 375,352,765.71
  5. Step 5: Solve for x
    x = 375,352,765.71/21,869.37
  6. Step 6: Final answer
    x = 17,163.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.